Paul la cour



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UNITED STATES PATENT OFFICE.

PAUL LA COUR, OF ASKOVUS, DENMARK.

REG U.LATO R.

SPECIFICATION forming part of Letters Patent No. 498,461, dated May 30,1893. Application filed April 23,1392. Serial No. 430.314. (N0 model.)

T0 0. whom it may concern:

Be it known that I, PAUL LA COUR, a subject of the King of Denmark,residing at Askovus, Denmark, have invented certain new and usefulImprovements in Regulators, of which the following is a specification.

The object of my invention is to provide a new and improved regulatorformotors of all kinds, which regulator is so constructed as to keep themotor at a constant speed at all times.

The invention consists in the construction and combination of parts anddetails which will be fully described hereinafter and finally pointedout in the claims.

In the accompanying drawings, Figure l is a diagrammatic side-viewillustrating the principle of my improved regulator. Fig. 2 isaside-view of myimproved regulator, parts being shownin section andothers broken out. Fig. 3 is a plan-view of the same, parts being insection. Fig. 4 is an end-view.

Similar letters of reference indicate corresponding parts.

Referring to Fig. 1, A is a worm-wheel, which is driven in the directionof its arrow by means of any suitable devices from a motor (not shown),and B is a worm, which may be rotated from any other independentmechanism (not shown) by means of the crank T The bearings o and p ofthe worm are formed on a frame 72 which latter can turn on the axle a ofthe worm-wheel, and the said frame n is to be connected by the rod Rwith the devices that control the motive force admitted to the motor insuch a manner, that the speed of the motor is decreased when the rod Ris raised by the frame n and increased when the rod R and the frame ware lowered. In case no rotary motion would be given to the worm B andthe worm-wheel A would be rotated in the direction of its arrow, thatpart of the frame n carrying the worm B would be moved downward, and theend of the frame 77. connected with the rod R would be moved upward; andvice versa in the case of the wheel not receiving rotary motion and theworm B be rotated, the result would be that the worm would travel up onthe worm-wheel and thereby the rod R would be moved downward. The motoris thus compelled to turn the worm-wheel A the distance of as many teethas the worm makes rotations, as the greater speed of the worm-wheelwould raise the rod R thereby decreasing the amount of power admitted tothe motor; and a decreased speed of the worm-wheel A would cause the rodR to descend, whereby the motive force admitted to the motor would beincreased.

The principle here described is applied in the device shown in Figs. 2,3 and 4, in which F F are journal bearing blocks for the'shaft a of theworm-wheel A A forked lever n is mounted to turn on the axle a and saidfork consists of two arms, with which are connected. means, such as athird arm n for holding in suspense an adjustable wheel L and to theopposite end of said fork the piece 12 is fixed, at the top and bottomof which bearings 0 and p for the worm-shaft B are arranged. A constantresistance such as a fan having blades V is fixed on the upper end ofsaid worm-shaft, the blades of said fan having preferably the shape ofpropeller wings. Stop-screws 0c and g on the bearing blocks limit theswinging movement of the lever n. The rod R which leads to the throttlevalve of an engine or any other motor controlling device is connectedwith the arm a The shaft 0/ is rotated by means of a belt and pulley(not shown) from the motor in the direction indicated by the arrow inFig. 2, whereby the worm and the fan on the same are rotated. The saidfan at a certain speed counterbalances the weight L and holds the arm 'nin horizontal position. v If work is taken from the motor and the speedof thelatter thereby increased, there is a sudden burst of speed in thewheel A and the same travels a few teeth forward on the worm, compellingthe latter to move downward slightly, whereby the weight L risescorrespondingly and the valve admitting motive fluid to the motor isclosed. At the same time, the fan immediately begins to rotate faster,producing on account of the shape of the fan-blades, an increasedpressure on the step bearing, which pressure assists in raising theweight L. If, on the contrary, Work is added to the machine, therotation of the wheel A is decreased and consequently the speed of thefan is also decreased, and the fan is no longer able to counterbalancethe weight L, which will therefore descend and open the valve, admittingmotive fluid to the motor. In this manner a perfect regulation can beobtained, as the downward pressure of the fan always varies according tothe speed of the motor. The wings V of the fan must have the shape ofpropeller Wings, so as to drive the air upward and thereby effect anincrease in the speed of the fan and a corresponding increase inpressure on the lower step-bearin g p of the worm, so that the weight Lcan be increased without correspondingly increasing the pressure betweenthe teeth on the worm-Wheel and the threads of the worm, and withoutrequiring the motor to do more work in that respect. A greater weightcan thus be used and can very readily overcome the resistance to whichthe rod 4* is subjected in opening and closing the valve. For marineengines the weight can be replaced by a spr1ng.-

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a motor regulator, the combination, with aconstant weight and a substantially constant resistance, acting on eachother, of means for holding said Weight in suspense, which means areoperated from the motor to be regulated in such a manner that the weightis raised when the speed of the motor is increased, a lever acted uponby said weight, and means connected with said lever for acting on apartof the motor to be controlled, substantially as set forth.

2. In a motor regulator, the combination, with a worm-Wheel, a levermounted to turn on the shaft of the-worm-wheel, a weight supported bysaid lever, a rod connected with said lever and leading to thecontrolling valve of the motor, a worm mounted in hearings on saidlever, and engaging the worm-wheel, and a fan on the upper end of saidworm, substantially as set forth.

3. The combination, with a Worm-wheel, of a frame mounted loosely on theshaft of the worm-wheel, a worm mounted in said frame and engaging theWorm-Wheel, a resistance connected with said worm, and means connectedwith the frame for pulling that end opposite the one carrying the wormdownward, substantially as set forth.

In testimony that I claim the forego'i-ng'as myinvention Ihave signed myname in presence of two subscribing witnesses.

PAUL LA COUR.

Witnesses:

G. HoF-nAN-BARY, FRITZ TONBERG.

